Eight new, triply eclipsing triple star systems

@misc{borkovits2026eight,
  title = {{Eight new, triply eclipsing triple star systems}},
  author = {T. Borkovits and S. A. Rappaport and G. Torres and A. Tokovinin and T. Mitnyan and R. Gagliano and T. Jacobs and B. Powell and V. Kostov and M. Omohundro and M. H. Kristiansen and I. Terentev and H. M. Schwengeler and D. LaCourse and Z. Garai and T. Pribulla and I. B. B\'ıró and I. Csányi and Z. Dencs and D. W. Latham and R. Uhlař and A. Pál},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.31200},
  eprint = {2610.31200},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.31200},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Eight new, triply eclipsing triple star systems
AU  - T. Borkovits
AU  - S. A. Rappaport
AU  - G. Torres
AU  - A. Tokovinin
AU  - T. Mitnyan
AU  - R. Gagliano
AU  - T. Jacobs
AU  - B. Powell
AU  - V. Kostov
AU  - M. Omohundro
AU  - M. H. Kristiansen
AU  - I. Terentev
AU  - H. M. Schwengeler
AU  - D. LaCourse
AU  - Z. Garai
AU  - T. Pribulla
AU  - I. B. B\'ıró
AU  - I. Csányi
AU  - Z. Dencs
AU  - D. W. Latham
AU  - R. Uhlař
AU  - A. Pál
PY  - 2026
DA  - 2026/10/22
PB  - arXiv
DO  - 10.48550/arxiv.2610.31200
UR  - https://arxiv.org/abs/2610.31200
AB  - We have identified numerous triply eclipsing hierarchical triple star systems from observations made with the space telescope TESS. For many of these systems we can potentially determine their dynamical and astrophysical parameters with high precision, in some cases even without the use of radial velocity data. In the present paper we report the comprehensive study of eight new, triply eclipsing triple star systems, taken from this larger sample: TICs 77177148, 220456364, 232874003, 306690194, 343763382, 358795247, 379084660, 385933895. Besides the photometric data from the TESS observations, we obtained supplementary ground-based photometric measurements, as well as radial velocity measurements for some of the systems. The eclipse timing variation curves extracted from the TESS data and from the ground-based follow up data, the photometric light curves, radial velocity data, and the spectral energy distribution are combined in a complex photodynamical analysis to yield the stellar and orbital parameters for all of the investigated systems. The outer periods are in the range of 63-294 days, including the currently sixth tightest known triple system, TI 385933895 with an outer to inner period ratio of 9.82. We find that all of the triples are nearly coplanar, with mutual inclination angles of <=2.5deg. Despite such flatness, we still detect eclipse depth variations in TIC 220456364 that are induced by orbital plane precession. Moreover, we find that TIC 358795247 is likely a (2+1)+1-type hierarchical quadruple system. Finally we make some statistical assessments of a number of the orbital elements, stellar parameters, and distances of these systems.
ER  -